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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/105591] [13 Regression] ICE: in tree_to_poly_uint64, at tree.cc:3250 with -O -mavx512f -mno-avx2 since r13-379
Date: Fri, 13 May 2022 11:58:07 +0000 [thread overview]
Message-ID: <bug-105591-4-mhGqPWBxhZ@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-105591-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105591
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Hongtao.liu from comment #6)
> Maybe we should add an canonicalization in match.pd to make sure index is in
> range of 0 - 2*N, and the general code need't to do check idx % 2*N.
That wouldn't work. You can't rely on optimization happening somewhere else.
The VEC_PERM_EXPR operand could be substituted somewhere else and match.pd
could trigger on it only later or not at all.
next prev parent reply other threads:[~2022-05-13 11:58 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-13 11:09 [Bug tree-optimization/105591] New: [13 Regression] ICE: in tree_to_poly_uint64, at tree.cc:3250 with -O -mavx512f -mno-avx2 zsojka at seznam dot cz
2022-05-13 11:40 ` [Bug tree-optimization/105591] " rguenth at gcc dot gnu.org
2022-05-13 11:41 ` crazylht at gmail dot com
2022-05-13 11:43 ` jakub at gcc dot gnu.org
2022-05-13 11:48 ` [Bug tree-optimization/105591] [13 Regression] ICE: in tree_to_poly_uint64, at tree.cc:3250 with -O -mavx512f -mno-avx2 since r13-379 zsojka at seznam dot cz
2022-05-13 11:50 ` jakub at gcc dot gnu.org
2022-05-13 11:54 ` crazylht at gmail dot com
2022-05-13 11:58 ` jakub at gcc dot gnu.org [this message]
2022-05-13 11:59 ` jakub at gcc dot gnu.org
2022-05-13 12:10 ` jakub at gcc dot gnu.org
2022-05-13 12:34 ` crazylht at gmail dot com
2022-05-13 12:43 ` jakub at gcc dot gnu.org
2022-05-13 12:45 ` crazylht at gmail dot com
2022-05-17 0:59 ` cvs-commit at gcc dot gnu.org
2022-05-17 1:01 ` crazylht at gmail dot com
2022-10-19 10:10 ` rguenth at gcc dot gnu.org
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